In a posterior dislocation, the vital structures behind the SC joint can be compressed (squeezed), leading to life-threatening problems with breathing, choking, or blood flow from the heart to your arms or brain. Posterior -the end of the clavicle is pushed backward, behind the sternum and deep into the upper chestĪlthough both kinds of dislocations are serious injuries, a posterior dislocation requires more urgent medical attention.Anterior - the end of the clavicle is pushed forward, in front of the sternum (breastbone).Joint dislocations are classified as either "anterior" (forward) or "posterior" (backward), depending on which direction the collarbone moves: In rare cases, a strong blow to the shoulder can cause an injury in which the joint dislocates completely from its normal position. Injuries to the SC joint can range from a mild sprain, in which the surrounding ligaments are stretched (the most commonly seen injury), to a fracture of the clavicle (collarbone) itself. ![]() Injuries (Sprains, Fractures, and Dislocations) Injuries and osteoarthritis are the most common disorders associated with the SC joint. This is a type of arthritis that can lead to pain, stiffness, and reduced motion in the shoulder and arm. The SC joint can also be damaged over time, as the protective tissue that covers the ends of the bones gradually wears away.When this occurs, it is a serious injury that requires immediate medical attention. Very rarely, a hard blow to the shoulder with an injury to the SC joint can damage the vital organs and tissues that lie nearby, such as the main blood vessels from the heart, the trachea (windpipe), and the esophagus (tube that connects the throat to the stomach).While these injuries can be painful, most are relatively minor and will heal well without surgery. ![]() Injuries to the SC joint typically result from high-energy injuries, such as motor vehicle collisions, or contact sports like football.Although not common, problems with the SC joint can arise from injury and other disorders. The joint is located in the spot where the clavicle (collarbone) meets the sternum (breastbone) at the base of the neck. ![]() The sternoclavicular (SC) joint is one of the four joints that make up the shoulder.
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